PMID- 36761918 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231112 IS - 1664-2295 (Print) IS - 1664-2295 (Electronic) IS - 1664-2295 (Linking) VI - 13 DP - 2022 TI - Therapeutic potential of blocking GAPDH nitrosylation with CGP3466b in experimental autoimmune encephalomyelitis. PG - 979659 LID - 10.3389/fneur.2022.979659 [doi] LID - 979659 AB - Multiple sclerosis (MS) is a neuroinflammatory disease of the central nervous system (CNS). Although classically considered a demyelinating disease, neuroaxonal injury occurs in both the acute and chronic phases and represents a pathologic substrate of disability not targeted by current therapies. Nitric oxide (NO) generated by CNS macrophages and microglia contributes to neuroaxonal injury in all phases of MS, but candidate therapies that prevent NO-mediated injury have not been identified. Here, we demonstrate that the multifunctional protein glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is robustly nitrosylated in the CNS in the experimental autoimmune encephalomyelitis (EAE) mouse model of MS. GAPDH nitrosylation is blocked in vivo with daily administration of CGP3466b, a CNS-penetrant compound with an established safety profile in humans. Consistent with the known role of nitrosylated GAPDH (SNO-GAPDH) in neuronal cell death, blockade of SNO-GAPDH with CGP3466b attenuates neurologic disability and reduces axonal injury in EAE independent of effects on the immune system. Our findings suggest that SNO-GAPDH contributes to neuroaxonal injury during neuroinflammation and identify CGP3466b as a candidate neuroprotective therapy in MS. CI - Copyright (c) 2023 Godfrey, Hwang, Cho, Shanmukha, Gharibani, Abramson and Kornberg. FAU - Godfrey, Wesley H AU - Godfrey WH AD - Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, United States. FAU - Hwang, Soonmyung AU - Hwang S AD - Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, United States. FAU - Cho, Kaho AU - Cho K AD - Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, United States. FAU - Shanmukha, Shruthi AU - Shanmukha S AD - Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, United States. FAU - Gharibani, Payam AU - Gharibani P AD - Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, United States. FAU - Abramson, Efrat AU - Abramson E AD - Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, United States. FAU - Kornberg, Michael Davin AU - Kornberg MD AD - Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, United States. LA - eng GR - K08 NS104266/NS/NINDS NIH HHS/United States GR - T32 GM136577/GM/NIGMS NIH HHS/United States PT - Journal Article DEP - 20230124 PL - Switzerland TA - Front Neurol JT - Frontiers in neurology JID - 101546899 PMC - PMC9902867 OTO - NOTNLM OT - GAPDH OT - experimental autoimmune encephalomyelitis OT - multiple sclerosis OT - neuroinflammation OT - neuroprotection OT - nitric oxide OT - nitrosylation COIS- MK has received consulting fees from Biogen Idec, Genentech, Janssen Pharmaceuticals, Novartis, OptumRx, and TG Therapeutics on topics unrelated to this manuscript. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/02/11 06:00 MHDA- 2023/02/11 06:01 PMCR- 2023/01/24 CRDT- 2023/02/10 03:15 PHST- 2022/06/27 00:00 [received] PHST- 2022/12/30 00:00 [accepted] PHST- 2023/02/10 03:15 [entrez] PHST- 2023/02/11 06:00 [pubmed] PHST- 2023/02/11 06:01 [medline] PHST- 2023/01/24 00:00 [pmc-release] AID - 10.3389/fneur.2022.979659 [doi] PST - epublish SO - Front Neurol. 2023 Jan 24;13:979659. doi: 10.3389/fneur.2022.979659. eCollection 2022.